Statement of Operations (USD $)
 3 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Plant Operating Revenues:    
Energy sales $ 1,193,185 $ 1,274,790
Energy credit sales 87,764 123,185
Total plant operating revenues 1,280,949 1,397,975
Plant Operating Expenses:    
Plant production expenses 874,588 1,027,565
Well repairs and maintenance 354,126 1,480,706
Total plant operating expenses 1,228,714 2,508,271
Net Gain (Loss) from Plant Operations 52,235 (1,110,296)
Operating Expenses:    
Corporate administration 270,553 267,964
Professional and management fees 263,538 1,268,829
Salaries and wages 313,017 599,036
Stock based compensation 162,975 534,898
Travel and promotion 48,321 37,386
Other plant expenses 702,780 785,985
Other operating expenses 119,998 34,744
Total operating expenses 1,881,182 3,528,842
Loss from Operations (1,828,947) (4,639,138)
Other Income (Loss):    
Other income (expense) (68) 0
Interest income 1,858 5,783
Total other income 1,790 5,783
Net Loss Before Accumulated Change (1,827,157) (4,633,355)
Accumulated effect on prior period application of capitalization policy 0 262,305
Net Loss (1,827,157) (4,371,050)
Net loss attributable to the non-controlling interest 896,287 2,030,026
Net Loss Attributable to U.S. Geothermal Inc. (930,870) (2,341,024)
Other Comprehensive Income (Loss):    
Unrealized gain (loss) on investment in equity securities (24,996) (67,789)
Comprehensive Loss Attributable to U.S. Geothermal Inc. $ (955,866) $ (2,408,813)
Basic And Diluted Net Loss Per Share Attributable to U.S. Geothermal Inc. $ (0.01) $ (0.03)
Weighted Average Number of Shares Outstanding for Basic and Diluted Calculations 86,261,974 84,835,093